import auth from '@/plugins/auth'
import router, {
	constantRoutes,
	dynamicRoutes
} from '@/router'
import {
	getRouters
} from '@/api/menu'
import Layout from '@/layout/index'
import ParentView from '@/components/ParentView'
import InnerLink from '@/layout/components/InnerLink'
import Cookies from "js-cookie";

const permission = {
	state: {
		routes: [],
		addRoutes: [],
		defaultRoutes: [],
		topbarRouters: [],
		sidebarRouters: []
	},
	mutations: {
		SET_ROUTES: (state, routes) => {
			state.addRoutes = routes
			state.routes = getConstantRoutes().concat(routes)
		},
		SET_DEFAULT_ROUTES: (state, routes) => {
			state.defaultRoutes = getConstantRoutes().concat(routes)
		},
		SET_TOPBAR_ROUTES: (state, routes) => {
			state.topbarRouters = routes
		},
		SET_SIDEBAR_ROUTERS: (state, routes) => {
			state.sidebarRouters = routes
		},
	},
	actions: {
		// 生成路由
		GenerateRoutes({
			commit
		}) {
			return new Promise(resolve => {
				let application = Cookies.get('application');
				console.log('获取用户信息1', application);
				if (application == 'undefined') application = "";
				console.log('获取用户信息2', application);
				// 向后端请求路由数据
				getRouters(application).then(res => {
					const sdata = JSON.parse(JSON.stringify(res.data))
					const rdata = JSON.parse(JSON.stringify(res.data))
					const sidebarRoutes = filterAsyncRouter(sdata)
					const rewriteRoutes = filterAsyncRouter(rdata, false, true)
					const asyncRoutes = filterDynamicRoutes(dynamicRoutes);
					rewriteRoutes.push({
						path: '*',
						redirect: '/404',
						hidden: true
					})
					router.addRoutes(asyncRoutes);
					commit('SET_ROUTES', rewriteRoutes)
					commit('SET_SIDEBAR_ROUTERS', getConstantRoutes().concat(sidebarRoutes))
					commit('SET_DEFAULT_ROUTES', sidebarRoutes)
					commit('SET_TOPBAR_ROUTES', sidebarRoutes)
					resolve(rewriteRoutes)
				})
			})
		}
	}
}

/**
 * 过滤首页
 */
function getConstantRoutes() {
	if (Cookies.get('callbackApp')) {
		let newConstantRoutes = constantRoutes.filter(item => item.redirect != 'index');
		console.log('栏目', newConstantRoutes);
		return newConstantRoutes;
		// return constantRoutes;
	} else {
		return constantRoutes;
	}
}

// 遍历后台传来的路由字符串，转换为组件对象
function filterAsyncRouter(asyncRouterMap, lastRouter = false, type = false) {
	return asyncRouterMap.filter(route => {
		if (type && route.children) {
			route.children = filterChildren(route.children)
		}
		if (route.component) {
			// Layout ParentView 组件特殊处理
			if (route.component === 'Layout') {
				route.component = Layout
			} else if (route.component === 'ParentView') {
				route.component = ParentView
			} else if (route.component === 'InnerLink') {
				route.component = InnerLink
			} else {
				route.component = loadView(route.component)
			}
		}
		if (route.children != null && route.children && route.children.length) {
			route.children = filterAsyncRouter(route.children, route, type)
		} else {
			delete route['children']
			delete route['redirect']
		}
		return true
	})
}

function filterChildren(childrenMap, lastRouter = false) {
	var children = []
	childrenMap.forEach((el, index) => {
		if (el.children && el.children.length) {
			if (el.component === 'ParentView' && !lastRouter) {
				el.children.forEach(c => {
					c.path = el.path + '/' + c.path
					if (c.children && c.children.length) {
						children = children.concat(filterChildren(c.children, c))
						return
					}
					children.push(c)
				})
				return
			}
		}
		if (lastRouter) {
			el.path = lastRouter.path + '/' + el.path
			if (el.children && el.children.length) {
				children = children.concat(filterChildren(el.children, el))
				return
			}
		}
		children = children.concat(el)
	})
	return children
}

// 动态路由遍历，验证是否具备权限
export function filterDynamicRoutes(routes) {
	const res = []
	routes.forEach(route => {
		if (route.permissions) {
			if (auth.hasPermiOr(route.permissions)) {
				res.push(route)
			}
		} else if (route.roles) {
			if (auth.hasRoleOr(route.roles)) {
				res.push(route)
			}
		}
	})
	return res
}

export const loadView = (view) => {
	if (process.env.NODE_ENV === 'development') {
		return (resolve) => require([`@/views/${view}`], resolve)
	} else {
		// 使用 import 实现生产环境的路由懒加载
		return () => import(`@/views/${view}`)
	}
}

export default permission